Fountain pen



KOVAC FOUNTAIN PEN Filed Nov. 29, 1.941

In venfg;

Patented Jan. 11, 1944 FOUNTAIN PEN Theodor Kovacs, Vienna, Germany;vested in the Allen Property Custodian Application November 29, 1941,Serial No. 421,061 In Germany May 11, 1939 7 Claims. (Cl. 12052) Thisinvention relates to a fountain pen equipped with a unit adapted to beshoved into the bore of the front portion of the body of the pen holderand comprising the writing pen proper, the ink conducting and supplyingmember and a sleeve. With the known fountain pens of this type having asleeve arranged in the front portion of the holder-arranging the part ofthe sleeve surrounding the pen outside the holder renders the packing ortightening difficult-the sleeve fits accurately into the conical orcylindrical bore of the front portion of the holder and serves forholding said unit in place. Deformations of the sleeve by reason oftensions arising in the pen can cause jamming of the unit in the frontportion of holders of the type mentioned which may entail damages to thepen holder in general and the pen proper in particular.

The above-mentioned drawbacks are overcome, according to the presentinvention, by the improvement that the outer diameter of the sleeve ismade smaller than the diameter of the bore receiving it and serves forholding fast the rear portion of the ink conducting and supplying memberwhich extends through and beyond it. Owing to that smaller diameter ofthe sleeve relatively to the bore into which it is inserted jamming ofthe unit in the front portion of the holder body is surely and reliablyprevented. The rear portion of the ink member extending beyond saidsleeve can fit into the cylindrical bore of the body in such a manner asto be shiftable therein whereby the possibility is afforded that theunit can always be easily exchanged. It is also possible to provide foran additional clamping action by providing a longitudinal slot in theinner end of the ink member and bending the thus separated two inkmember portions slightly asunder so that they constitute elasticportions able to exert a certain slight clamping action.

In a modified constructional form of the thus improved fountain pen thesleeve may extend over and beyond the' ink member, that extensionfitting then closely into the bore of the holder body whereby the inkbody is securely retained therein.

In order to prevent the unit from turning in the holder body the frontportion thereof may be provided with a transverse pin engaging a groove,which may be the air groove of the ink member, or said pin may beprovided in this member and engaging a groove of said front portion, allas fully described hereinafter.

The invention is illustrated diagrammatically and by way of example inthe accompanying drawing in which Figure 1 is a side-view of the unit"composed of the pen proper, the ink conducting and supplying member andthe sleeve. Figure 2 shows an axial section through these members, inconnection with the front portion of the body of the holder. Figure 3 isa transverse section through the members shown in Fig. 2 on the lineIII-III, and seen in the direction indicated by the arrows, and theFigures 4. 5 and 6 show views corresponding to the Figs. 1-3 and relateto a modified constructional form of the-improved fountain pen.

Referring to the constructional form shown in Figs. 1-3 the unitmentioned in the introduction of this specification consists of the penproper I, the sleeve 2 and the ink conducting and supplying member 3. Inthe front portion 5 of the body of the holder is a suitably narrow bore6 serving for the reception of that portion 4 of the ink conducting andsupplying member 3 which extends from the sleeve 2 into said frontportion 5 of the body. The sleeve 2 is situated .in a suitably largerbore of said body portion 5. The part 4 fits into the part 5 in such amanner as to be shiftable therein, and the sleeve 2 fits into the boreprovided for it with a certain play. In the part 4 is a longitudinalslot 8 and the ends thereby formed are slightly bent asunder so as to beable to exert an elastic action and there is, furthermore, in, said part4 a transverse pin in engaging with its inner end a longitudinal airpassage l I provided in the ink conducting and supplying member 3.

The manner of operation of the fountain pen is as follows:

Owing to the elasticity of the pen which ispressed against the inksupplying member 3 by means of the sleeve 2 this latter will be deformedin the course of time, but the gap left in the bore 6 is large enough toallow of even a large deformation of the sleeve without entailingjamming thereof, whereby an easy exchangeability of the unit iswarranted. The part 4 is not subject to deformations and can, therefore,fit into the bore 6 of the body in such a manner as to be comparativelyeasily shiftable therein. In the whole the unit" is reliably seated andtightened in the holder body. The elasticity of the ink member 3 at itsinner end permits ofa somewhat slighter accuracy of the seat thereof inthe holder body. The pin l0 engaging the air passage I l prevents theunit from turning in the body.

In the modification shown in Figs. 4-6 the sleeve I 2 extends nearlyover the entire lower portion 13 of the ink member l4. Where the sleeveembraces the inner portion of the pen l5, there-it is tapered relativelyto its other portion is, this portion fitting more accurately into thecylindrical bore of the front part of the holder body, but being,nevertheless, shiftable therein, so that the unit is guided, but alsoheld in its proper operative position. There is also with this modifiedconstructional form a gap between the free end portion of the sleeve l2and the surrounding end portion of the holder body, where there is theinner end of the pin, and thus jamming of the unit within the bore ofthe body owing to a deformation of the sleeve securely and reliablyprevented.

In order to prevent the unit from turning a pin [9 is inserted into theink member l4 and engages with its outwardly projecting end a groove 20provided in an inner shoulder 2| of the holder body, this shoulderforming an abutment for the sleeve l6, as shown in Fig. 5.

I claim:

1. A fountain pen, comprising, in combination with the fountain pen bodyhaving a bore in its front portion a sleeve having a smaller outerdiameter than the diameter of said bore and 25 being arranged therein,and an ink conducting member adapted to supply the pen proper with inkand extending through said sleeve into an inner extension of said boreand having a shank,

the inner end of which bears against the pen 3 ins ton sbody.

2. A fountain pen as specified in claim 1, in

aesaom which the portion of the ink conducting and supplying memberextending beyond said sleeve into the holder body has a longitudinalslot dividing said portion into tongues, bent slightly asunder and ableto exert a clamping action.

3. A fountain pen as specified in claim 1, in which the sleeve extendsbeyond the rear end of the pen proper and the portion forming theextension is seated on a shoulder in the holder body bore and retainsthe ink conducting member 7 therein.-

4. A fountain pen as specified in claim 1, in which the ink conductingmember has a transverse pin extending into a longitudinal grooveprovided in the holder body.

5. A fountain pen as specified in claim 1, in which the holder body hasa pin extending into a longitudinal groove formed in the ink conductingmember.

6. A fountain pen as specified in claim 1, in which the holder body hasa pin extending into a longitudinal air passage of the ink conductingmember.

7. A fountain pen comprising a body having a bore in its front portion,a pen; an ink conducting member and a sleeve embracing said pen andmember and loosely received in said bore, said member having an innersplit and adapted to grip the periphery of the bore at its inner endform- 'rnnonon KovAcs.

